RADIATION SAFETY (GENERAL) REGULATIONS 1983 - SCHEDULE 16
RADIATION SAFETY (GENERAL) REGULATIONS 1983 - SCHEDULE 16
[Heading inserted: Gazette 4 Mar 1994
p. 837.]
[Regulation 28(3)(d)]
1. In this
Schedule —
equipment means cobalt teletherapy equipment;
treatment room means a room where the radiation
source for any equipment is housed.
2. (1) The treatment
room shall have approved structural shielding so that the effective dose any
person (other than a patient receiving treatment) is exposed to does not
exceed the appropriate effective dose limit.
(2) The structural
shielding referred to in subitem (1) shall be —
(a)
approved by the Council and a qualified expert before the construction of the
treatment room; and
(b)
reviewed by a qualified expert before any structural alteration to the
treatment room or any modification to the equipment.
3. A radiation survey
shall be carried out by a qualified expert to ensure that the shielding
referred to in item 2(1) is as approved —
(a)
immediately after the equipment is installed and before any patient is
treated; and
(b)
immediately after any structural alteration to the treatment room or any
modification to the equipment.
4. The entrance to the
treatment room shall be clearly and permanently labelled with a sign of not
less than 15 cm x 15 cm stating
“CAUTION — RADIATION” and containing the radiation
warning symbol.
5. It shall be
possible from outside the treatment room, to observe and converse with a
patient who is inside the treatment room.
6. When the radiation
beam is in use, a signal shall indicate this clearly to persons inside the
treatment room and persons about to enter the treatment room.
7. The radiation
source shall be fitted with a source control mechanism so that —
(a) if
any door or other barrier (such as a light beam) to the treatment room is
opened or interrupted, the equipment shall automatically and immediately
switch off; and
(b) the
equipment cannot be activated until all barriers to the treatment room are
closed; and
(c)
after the equipment has switched off, as referred to in paragraph (a), it
can only be reactivated manually.
8. Only the person
receiving treatment shall be in the treatment room while the radiation beam is
in use.
9. No person shall
enter the treatment room other than as necessary for treatment, for operation
or maintenance of the equipment or for other essential activities.
10. A qualified expert
shall —
(a) be
responsible for ensuring the correct operation and calibration of the
equipment in accordance with the “Revised code of practice for dosimetry
of 2 to 25 MV x‑rays, and of caesium‑137 and cobalt‑60 gamma
ray beams” (Physics in Medicine and Biology 1983, Vol. 28,
No. 10, pp.1097‑1104) or other approved international protocol; and
(b)
verify radiation field sizes relevant to radiation beam data at intervals not
exceeding 4 weeks.
11. Emergency
procedures to be followed in the event of the failure of the source control
mechanism shall be established, approved and posted at the treatment control
panel.
12. It shall be
possible to lock mechanically the source control mechanism in the
“safe” position during maintenance.
13. (1) A permanent
radiation monitor shall be installed in the treatment room for continuous
monitoring of the radiation beam status.
(2) The permanent
radiation monitor shall provide a visual signal —
(a)
inside the treatment room; and
(b) near
the entrance outside the treatment room.
(3) The permanent
radiation monitor shall have the capacity to provide an audible signal inside
the treatment room and this signal shall be used when maintenance or
calibration of the equipment is in progress.
14. A permanent
radiation monitor used in association with the equipment shall —
(a)
provide visible warning of a malfunction that may result in an exposed or
partly exposed radiation source; and
(b)
provide a warning of high radiation levels which is visible to a person in, or
about to enter, the treatment room; and
(c) have
an emergency power supply (i.e. a battery system) which is separate from the
power supply to the equipment; and
(d) be
tested to ensure that it is operating correctly each day before the equipment
is used for treatment.
15. (1) A portable
radiation survey monitor shall be available on the premises where the
treatment room is located and shall be used if any malfunction occurs that may
result in an exposed or partly exposed radiation source.
(2) The portable
radiation survey monitor referred to in subitem (1) shall be calibrated
by an approved calibration facility at intervals not exceeding 12 months.
16. The equipment
shall be inspected and serviced by an approved person to ensure that the
radiation source control mechanism is functioning properly —
(a)
during replacement of the radiation source; and
(b) at
intervals not exceeding 3 months.
17. The protective
source housing for the equipment shall be —
(a)
constructed so that, measured in accordance with item 18 —
(i)
when the radiation beam is off, the maximum dose rate in
air at 1 metre from the radiation source does not exceed 0.1 milligray
per hour and the average dose rate in air does not exceed 0.02 milligray per
hour; and
(ii)
when the radiation beam is on, the maximum dose rate in
air at 1 metre from the radiation source does not exceed 0.1% of the useful
beam exposure rate at 1 metre or 10 milligray per hour, whichever is the
greater;
and
(b) such
that the integrity of the protective source housing shielding is preserved in
the event of fire.
18. (1) When the
radiation beam is off, the maximum dose rate in air shall be measured at 26
points defined by a sphere 1 metre in radius centred on the radiation source
of which —
(a) 2
points shall be located at the poles of the sphere and 4 equally spaced
points shall be located on the sphere’s equator; and
(b) 8
points shall be located at the centres of the spherical triangles formed by
connecting the first 6 points; and
(c) 12
points shall be located at points midway between the first 6 points.
(2) The average
maximum dose rate of the 26 points referred to in subitem (1) shall not
exceed 0.02 milligray per hour and no point shall exceed 0.1 milligray per
hour.
(3) When the radiation
beam is on, the maximum dose rate in air shall be measured with the beam
defining diaphragms closed as far as possible and, if the useful beam aperture
is not completely intercepted at that position, the entire useful beam shall
be blocked by lead which has an attenuation equivalent to that of the
equipment source housing.
19. (1) The radiation
source housing, including the radiation beam aperture and other locations
likely to be contaminated in the event of a leakage, shall be tested when the
radiation beam is off for leakage of radioactive material —
(a)
immediately after the installation of the equipment; and
(b) at
intervals not exceeding 12 months; and
(c)
immediately before any maintenance work is carried out in the housing port or
collimator assembly.
(2) No maintenance
work shall be carried out in the housing port or collimator assembly until the
contamination test described in subitem (1) is completed.
20. If the
contamination test described in item 19(1) indicates the presence of free
activity of more than 2 000 Bq, the radiation source shall be considered
to be leaking and —
(a)
arrangements shall be made for immediate repair to be carried out; and
(b) the
Council shall be notified in writing immediately.
21. Beam collimation
shall be carried out using permanent cones or diaphragms which —
(a) do
not transmit more than 2% of the useful beam; and
(b)
comply with the leakage radiation limits set out in item 17(a).
22. Where a diaphragm
is used for beam collimation —
(a) the
diaphragm shall include a light beam providing illumination of not less than
100 lux at a distance of 1 metre from the light source; or
(b) the
treatment area shall be indicated by a laser alignment system.
23. When the radiation
source is in the “on” position and at the usual treatment distance
(i.e. source to skin distance or source to isocentre distance), the mechanical
axis defining the axis of rotation of the collimating device shall be
accurately aligned to within 2 mm of the central axis of the radiation
beam for all orientations of the treatment head.
24. The equipment
shall have a remotely operated source control mechanism which —
(a) can
function in any orientation of the source housing; and
(b)
automatically and immediately switches the equipment off —
(i)
at the predetermined end of the exposure; or
(ii)
if there is a breakdown or interruption of the activating
force;
and
(c)
ensures that the equipment remains switched off, as referred to in
paragraph (b), until it is reactivated manually.
25. (1) The equipment
and source control mechanism shall be located so that in an emergency the
equipment can be turned off with the minimum possible exposure to any person.
(2) Any tools required
for turning the equipment off manually shall be mounted in a position near the
treatment room entrance that is easily visible and accessible.
26. The source housing
and the treatment control panel shall each have a warning device that plainly
indicates whether the radiation beam is “on” or “off”
and whether the source or shutter is “in transit”.
27. (1) The equipment
shall have —
(a) an
automatic timer, or an integrated dosemeter, which terminates the treatment
after a pre‑set time or dose; and
(b) a
back‑up timer which is independent of the timer referred to in
paragraph (a).
(2) The timers
referred to in subitem (1) shall be arranged so that —
(a) the
failure of one timer does not affect the other timer; and
(b) the
possibility of accidental communication between the timers is minimized; and
(c) each
timer is capable of terminating the radiation exposure by means independent of
the other timer; and
(d) the
terminating electrical circuits of the 2 timers are kept physically separate;
and
(e) each
timer counts up from zero so that an over‑exposure will give a reading;
and
(f)
information from the timers is retrievable, including after a power failure;
and
(g) the
stopping and starting of the timers is controlled by switches activated by the
source or shutter so that in the event of failure of the terminating means, a
true record of maximum exposure time is obtained; and
(h) the
switch controlling the timer referred to in subitem (1)(a) shall operate
when the source or shutter —
(i)
arrives at; and
(ii)
leaves,
the fully
“on” position;
and
(i)
the switch controlling the back‑up timer referred
to in subitem (1)(b) shall operate when the source or
shutter —
(i)
arrives at; and
(ii)
leaves,
a position where the
source is just shielded; and
(j) the
back‑up timer referred to in subitem (1)(b) shall terminate the
radiation exposure at a time not more than 6 seconds after the termination
time for the treatment pre‑set on the timer referred to in
subitem (1)(a).
(3) The electrical
circuits of the equipment shall be arranged so that —
(a)
after each radiation exposure, the tripping mechanism of the back‑up
timer referred to in subitem (1)(b) must be manually checked and the
settings and readings of both timers must be manually returned to zero; and
(b) it
is not possible to set or commence radiation exposure until the sequence
referred to in paragraph (a) has been completed.
(4) If treatment is
terminated by an event other than the operation of the timer referred to in
subitem (1)(a), the equipment shall give or show a signal which clearly
indicates this.
28. (1) It shall be
impossible for the source control mechanism to be switched on from inside the
treatment room.
(2) The source control
mechanism shall have a locking device so that it cannot be operated by any
unauthorised person.
29. (1) The equipment
shall be arranged so that the selection of the mode of treatment and the
selection and correct location of wedge filters are identified electrically.
(2) Radiation exposure
shall be impossible until the selection made in the treatment room of the mode
of treatment and wedge filter has been manually verified at the treatment
control panel.
(3) After the
verification referred to in subitem (2), the selected mode of treatment
and wedge filter shall be displayed on the treatment control panel.
30. (1) A beam stop,
or counterweight, on the equipment shall not transmit more than 0.1% of the
useful beam.
(2) The equipment
shall be arranged so that —
(a) the
relationship between the useful beam and a beam stop is permanently fixed; or
(b) it
has mechanical or electrical stops to ensure that the beam is directed only
towards barriers for which useful beam shielding has been provided.
[Schedule XVI inserted: Gazette
4 Mar 1994 p. 837‑41; (correction: Gazette
11 Mar 1994 p. 960); amended: Gazette 22 Jul 1997
p. 3825.]
This is a compilation of the Radiation Safety (General) Regulations 1983 and
includes amendments made by other written laws. For provisions that have come
into operation, and for information about any reprints, see the compilation
table.
Citation |
Published |
Commencement |
---|---|---|
21 Feb 1983 p. 555‑636 |
21 Aug 1983 (see r. 2) | |
Health Legislation Amendment Regulations 1984 r. 4 |
29 Jun 1984 p. 1780-4 |
1 Jul 1984 (see r. 2) |
Radiation Safety (General) Amendment Regulations 1986 |
10 Oct 1986 p. 3844-6 |
10 Oct 1986 |
Radiation Safety (General) Amendment Regulations (No. 2) 1986 |
5 Dec 1986 p. 4467-8 |
5 Dec 1986 |
Radiation Safety (General) Amendment Regulations 1987 |
26 Jun 1987 p. 2461-2 |
1 Jul 1987 (see r. 2) |
Radiation Safety (General) Amendment Regulations 1988 |
1 Jul 1988 p. 2143 |
1 Jul 1988 (see r. 2) |
Radiation Safety (General) Amendment Regulations 1989 |
20 Oct 1989 p. 3842 |
20 Oct 1989 |
Radiation Safety (General) Amendment Regulations (No. 2) 1990 |
20 Jul 1990 p. 3464-6 |
20 Jul 1990 |
Radiation Safety (General) Amendment Regulations (No. 3) 1990 |
4 Sep 1990 p. 4617 |
4 Sep 1990 |
Radiation Safety (General) Amendment Regulations 1991 |
15 Mar 1991 p. 1127-9 |
15 Mar 1991 |
Radiation Safety (General) Amendment Regulations (No. 5) 1991 |
28 Jun 1991 p. 3147-8 |
1 Jul 1991 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 6) 1991 |
6 Sep 1991 p. 4631-2 |
6 Sep 1991 |
Radiation Safety (General) Amendment Regulations (No. 2) 1991 |
29 Nov 1991 p. 5988-90 |
1 Jan 1992 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 7) 1991 |
24 Jan 1992 p. 368 |
24 Jan 1992 |
Radiation Safety (General) Amendment Regulations (No. 2) 1992 |
26 Jun 1992 p. 2697-9 |
1 Jul 1992 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 3) 1992 |
7 Aug 1992 p. 3856-9 |
7 Aug 1992 |
Radiation Safety (General) Amendment Regulations (No. 4) 1993 |
4 May 1993 p. 2299-2300 |
4 Jul 1993 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 3) 1993 |
4 May 1993 p. 2300-1 |
4 May 1993 |
Radiation Safety (General) Amendment Regulations 1993 |
28 May 1993 p. 2588-95 |
28 May 1993 |
Radiation Safety (General) Amendment Regulations (No. 2) 1993 |
11 Jun 1993 p. 2870-7 |
11 Jun 1993 |
Radiation Safety (General) Amendment Regulations (No. 5) 1993 |
9 Jul 1993 p. 3331-3 |
9 Jul 1993 |
Radiation Safety (General) Amendment Regulations (No. 6) 1993 |
28 Jan 1994 p. 281-3 |
28 Jan 1994 |
Radiation Safety (General) Amendment Regulations 1994 |
4 Feb 1994 p. 341 |
4 Feb 1994 |
Radiation Safety (General) Amendment Regulations (No. 2) 1994 |
4 Mar 1994 p. 837-41 (correction 11 Mar 1994 p. 960) |
4 Mar 1994 |
Radiation Safety (General) Amendment Regulations (No. 3) 1994 |
27 May 1994 p. 2212-14 |
1 Jul 1994 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 4) 1994 |
11 Nov 1994 p. 5694-6 |
11 Nov 1994 |
Radiation Safety (General) Amendment Regulations 1995 |
17 Mar 1995 p. 1027 |
17 Mar 1995 |
Reprint of the Radiation Safety (General) Regulations 1983 as at
4 Apr 1995 (includes amendments listed above) | ||
Radiation Safety (General) Amendment Regulations (No. 2) 1995 |
27 Jun 1995 p. 2546‑9 |
1 Jul 1995 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 3) 1995 |
25 Aug 1995 p. 3847‑8 |
25 Aug 1995 |
Radiation Safety (General) Amendment Regulations (No. 2) 1996 |
28 Jun 1996 p. 3021‑4 |
1 Jul 1996 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 5) 1996 |
15 Oct 1996 p. 5448‑52 |
15 Oct 1996 |
Radiation Safety (General) Amendment Regulations 1997 |
22 Jul 1997 p. 3813‑26 |
22 Jul 1997 |
Radiation Safety (General) Amendment Regulations (No. 2) 1997 |
19 Aug 1997 p. 4720‑2 |
19 Aug 1997 |
Radiation Safety (General) Amendment Regulations (No. 3) 1997 |
11 Nov 1997 p. 6209‑14 |
11 Feb 1998 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 2) 1998 |
10 Feb 1998 p. 733 |
1 Jul 1998 (see r. 2) |
Radiation Safety (General) Amendment Regulations 1999 |
30 Jun 1999 p. 2875‑6 |
1 Jul 1999 (see r. 2) |
Radiation Safety (General) Amendment Regulations (No. 2) 1999
4 |
31 Dec 1999 p. 7060‑4 |
31 Dec 1999 |
Radiation Safety (General) Amendment Regulations 2000 |
29 Feb 2000 p. 991-2 |
29 Feb 2000 |
Reprint of the Radiation Safety (General) Regulations 1983 as at
24 Mar 2000 (includes amendments listed above) | ||
Radiation Safety (General) Amendment Regulations 2001 5 |
25 Sep 2001 p. 5286‑7 |
25 Sep 2001 |
Radiation Safety (General) Amendment Regulations 2002 |
26 Mar 2002 p. 1746‑7 |
26 Mar 2002 (see r. 2 and Gazette 26 Mar 2002
p. 1744) |
Radiation Safety (General) Amendment Regulations (No. 2) 2002 |
16 Jul 2002 p. 3399‑400 |
16 Jul 2002 |
Radiation Safety (General) Amendment Regulations 2003 |
2 Jan 2004 |
2 Jan 2004 |
Radiation Safety (General) Amendment Regulations 2008 |
2 Sep 2008 p. 4117‑20 |
r. 1 and 2: 2 Sep 2008 (see r. 2(a)); |
Reprint 3: The Radiation Safety (General) Regulations 1983 as at
19 Dec 2008 (includes amendments listed above) | ||
Radiation Safety (General) Amendment Regulations 2010 |
17 Aug 2010 p. 4045‑8 |
r. 1 and 2: 17 Aug 2010 (see r. 2(a)); |
Radiation Safety (General) Amendment Regulations 2011 |
1 Apr 2011 p. 1183‑4 |
r. 1 and 2: 1 Apr 2011 (see r. 2(a)); |
Radiation Safety (General) Amendment Regulations 2014 |
30 Dec 2014 p. 5501‑3 |
r. 1 and 2: 30 Dec 2014 (see r. 2(a)); |
Radiation Safety (General) Amendment Regulations 2015 |
19 May 2015 p. 1754‑7 |
r. 1 and 2: 19 May 2015 (see r. 2(a)); |
Radiation Safety (General) Amendment Regulations (No. 2) 2015 |
9 Oct 2015 p. 3982 |
r. 1 and 2: 9 Oct 2015 (see r. 2(a)); |
Health Regulations Amendment (Fees and Charges) Regulations 2016
Pt. 6 |
17 Jun 2016 p. 2101-5 |
1 Jul 2016 (see r. 2(b)) |
Radiation Safety (General) Amendment Regulations 2016 |
20 Sep 2016 p. 3967-8 |
r. 1 and 2: 20 Sep 2016 (see r. 2(a)); |
Health Regulations Amendment (Public Health) Regulations 2016 Pt. 31 |
10 Jan 2017 p. 237‑308 |
24 Jan 2017 (see r. 2(b) and Gazette 10 Jan 2017
p. 165) |
Radiation Safety (General) Amendment Regulations 2017 |
7 Mar 2017 p. 1526-7 |
r. 1 and 2: 7 Mar 2017 (see r. 2(a)); |
Health Regulations Amendment (Fees and Charges) Regulations 2017
Pt. 9 |
30 Jun 2017 p. 3568‑74 |
1 Jul 2017 (see r. 2(b)) |
Reprint 4: The Radiation Safety (General) Regulations 1983 as at 4 Aug 2017
(includes amendments listed above) | ||
Health Regulations Amendment (Fees and Charges) Regulations 2018
Pt. 9 |
25 May 2018 p. 1632‑9 |
1 Jul 2018 (see r. 2(b)) |
Radiation Safety (General) Amendment Regulations 2018 |
16 Oct 2018 p. 4094 |
r. 1 and 2: 16 Oct 2018 (see r. 2(a)); Regulations other than r. 1 and 2: 17 Oct 2018 (see
r. 2(b)) |
Health Regulations Amendment (Fees and Charges) Regulations 2019
Pt. 9 |
14 Jun 2019 p. 1883‑94 |
1 Jul 2019 (see r. 2(b)) |
Health Regulations Amendment (Fees and Charges) Regulations 2020
Pt. 6 |
SL 2020/97 26 Jun 2020 |
1 Jul 2020 (see r. 2(b)) |
Health Regulations Amendment (Fees and Charges) Regulations 2021
Pt. 6 |
SL 2021/108 29 Jun 2021 |
1 Jul 2021 (see r. 2(b)) |
Radiation Safety (General) Amendment Regulations 2022 |
SL 2022/33 11 Mar 2022 |
r. 1 and 2: 11 Mar 2022 (see r. 2(a)); |
Health Regulations Amendment (Veterinary Practice) Regulations 2022
Pt. 3 |
SL 2022/93 17 Jun 2022 |
18 Jun 2022 (see r. 2(b) and SL 2022/81 cl. 2) |
Health Regulations Amendment (Fees and Charges) Regulations 2022
Pt. 9 |
SL 2022/136 15 Jul 2022 |
16 Jul 2022 (see r. 2(b)) |
Health Regulations Amendment (Fees and Charges) Regulations 2023
Pt. 9 |
SL 2023/96 30 Jun 2023 |
1 Jul 2023 (see r. 2(b)) |
1 Footnote no longer applicable.
2 The Standards Association of Australia has
changed its corporate status and its name. It is now Standards Australia
International Limited (ACN 087 326 690). It also trades as Standards
Australia.
3 Under the Alteration of Statutory Designations
Order (No. 3) 2001 a reference in any law to the Health Department
of Western Australia is read and construed as a reference to the Department of
Health.
4 The Radiation Safety (General) Amendment
Regulations (No. 2) 1999 r. 8(2) and (3) are transitional provisions that
are of no further effect.
5 The Radiation Safety (General) Amendment
Regulations 2001 r. 4(3) reads as follows:
(3) Until the council
approves a dental ancillary qualification under regulation 38(1)(c) and
(d) of the Radiation Safety (General) Regulations 1983 as amended by
this regulation, all dental ancillary qualifications are taken to be approved
dental ancillary qualifications for the purposes of that regulation.
Defined terms
[This is a list of terms defined and the provisions where they
are defined. The list is not part of the law.]
Defined term Provision(s)
absorbed dose
3(1)
approved 3(1)
average
output power 52(1)
becquerel
3(1)
chest screening 3(1)
chiropractor
3(1)
class 1 laser
3(1)
class 2 laser 3(1)
class 3B laser
3(1)
class 3R laser 3(1)
class 4 laser 3(1)
Code
28(1)
code of practice 31A(1)
compliance
test 40(2)
condition
3(1)
contrast Sch. IX
controlled area
52(1)
cooling curve 3(1)
dentist 3(1)
designated radiation worker
3(1)
disposal facility 31A(1)
disposal permit 3(1)
disposal site
31A(1)
ECD substance 7C(1)
effective
dose 3(1)
effective dose limit
3(1)
electron capture detector 7C(1)
equipment Sch. XVI
equivalent dose
3(1)
equivalent dose limit 3(1)
exemption 3(1)
field site
3(1)
filtration 3(1)
fluoroscopy
3(1)
form 3(1)
general
supervision 3(1)
gray
3(1)
half value layer 3(1)
image receptor
3(1)
industrial radiographer
3(1)
ionisation 3(1)
ionising radiation
3(1)
ion mobility spectrometer
7D(1)
irradiating apparatus 6(1), 6(3),
6(4)
item 3(1)
keep
3(1)
laser 3(1)
laser pointer
53B(4)
laser safety standard 3(1)
laser
system 52(1)
leakage radiation
3(1)
licence 3(1)
licence card
3(1)
licensed 3(1)
licensee 3(1)
low powered irradiating apparatus
3(1)
lux 3(1)
mammography screening 3(1)
maximum permissible
exposure level 3(1)
medical practitioner
3(1)
microwave oven 3(1)
microwave oven standard 3(1)
month of discharge
31(5)
near-surface disposal
31A(1)
NHMRC 3(1)
non-ionising radiation
3(1)
nuclide 3(1)
one
half life of the radioactive substance 12(3)
other
radiation regulations 4(1)
owner
Sch. II
permit 3(1)
personal file
3(1)
personal monitoring device
3(1)
personal supervision 3(1)
person at risk 33(5)
physiotherapist
3(1)
plain radiography 3(1)
podiatrist 3(1)
premises
3(1)
publication 3(1)
qualified expert
3(1)
quality factor
3(1)
radiation 3(1)
radiation oncologist
3(1)
radiation safety committee
3(1)
radiation safety officer 3(1)
radiation therapist 3(1)
radiation warning symbol
3(1)
radiation weighting factor
3(1)
radiation worker 3(1)
radioactive material 3(1)
radioactive substance
5(1)
radiographer 3(1)
radiologist 3(1)
registered
3(1)
registrant 3(1)
regulated class 3B
laser 52(1)
relevant contents
11(5)
repaired 19A(4)
responsible person
15(1)
sealed source
3(1)
section 3(1)
sievert
3(1)
smoke detector 7B(1)
sun-tanning unit
3(1)
temporary permit
3(1)
tissue weighting factor 3(1)
to be exposed
33(2)
transilluminator
3(1)
treatment room Sch. XVI
user
5(7)
veterinary surgeon 3(1)
x-ray
operator 3(1)
x-rays
3(1)
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